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Chemistry problem!

A student was performing an experiment in which 10% by weight NaCl solution was needed. To prepare it, he added 5 moles NaOH to an aqueous solution of HCl.The NaCl was used in experiment where 100 mol NaCl was required for complete reaction. How much substance is utilised in grams for reaction?[Molecular mass of substance is 203 gram and 1 mol NaCl is used for reaction with 0.01 mol substance]